Stone-working machine.



No. 827,993. PATENTBD AUG. 7, 1906.

J. R. PEIRGB. STONE WORKING MACHINE.

APPLICATION FILED JAN.15. 1906.

INVENTOR;

4 sHnBTsLsHmz-Tfx.

. ATNESSES;

N0; 827,993. PATBNTED AUG. 7, 1906.

- J. R. PBI-RCE.

STONE WORKING MACHINE.

APPLICATION FILED JAN. 15. 1906.l

4 SHEETS-SHEET 2.

lNvENTOR;

ILESSES: A M

fm v S 4f@ www No. 327,993. PATENTE@ AUG. 7, 190s.

- J. R. PEIRCB.;

STONE WORKING MAGHNE.

APPLICATION FILED JAN. 15. 1906.

4 SHEETS-SHEET 3.

INVENTOR;

WWNESSES;

No. 997,999. PATENTED 9119.7, 1999.

, J. R. PRIME.A

sToNEwoRKING MACHINE.

APPLICATION FILED JAN.15.1906.

` 4 SHEETS-SHEET 4.

'F/G' 5' FIG. 7.

INVENTOR:

-desired direction. The re UNITED STATES PATENT OEEIOE.

v`STONE-WORKING. MACHINE.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Application filed January 15,1906. Serial No. 296,144.y 4

To all whom it may concern: i Be it known that I, JOHN ROYDEN PEIROE,

`a citizen of the United States, residing in the borough of Manhattan,city, county, and State of New York, have invented certain new anduseful Im rovements in Stone- Working Machines, o ywhich the followingis a specication.

This invention aims to provide an improved apparatus for working stone,and especially marble. The invention, for example, may be a plied in acountersinking-machine or a :mol er and for cutting in a straight,circular, or irregular line, utting a molding on an irregularly-shaped sab, and for other similar work.

The im rovement is chiefly in the mechanism for eeding the stone to thecountersinking, molding,`or other tool, which mechanism is arranged tofeed the stone in two directions simultaneously, the rate of feed ineach of said directions being capable of regulation, so

as to secure a resultant movement in any lating means is under theconstant contro of the operator, so that the direction of feed may beperfectly controlled to obtain a cut along any line previously markedout on the stone or otherwise. Preferably a pair of separatefluid-pressure mechanisms are utilized, the

valves of said mechanisms beingy simulta. neously operable.-

An important feature is the arrangement of the mechanism in such a Waythat by moving the controllin means continuously in one direction theeed will be in a substantially circular direction and by holding thecontrolling means stationary at any point the feed will continue in atangent to the circular arc. The feeding mechanism is especially usefulwhen combined with a tool of the ty e described in my previousapplication fi ed June 19, 1905, Serial No. 266,062, and others, saidtool comprising a rapidlyrotating wheel, of carborundum or the like,which in the case of a countersinking-machine is provided with avertical passage for water through its center. Y

The accompanyin drawings illustrate a countersinking-machme embodyingthe invention.

Figure 1 is a plan. Fig. 2 is in part a front elevation and in part alongitudinal section. Fig. 3 is in part a side elevation and in part atransversesection on the line 3 3, Fi 1. Fig. 4 is a detail in verticalsection o the lower end of the tool-shaft. Fi 5 is 'a longitudinalsection of thecontroin device, the valve-casing being shown in eevation. Fig. 6 is an elevation of the valve-casing and adjacent partsat right an les to Fig. 5. Fig. 7 is a vertical section o the valve andcasing. Figs. 8 and 9 are horizontal sections of the valve on the planes8 8 and 9 9, respectively, indicated in Fig. 7.

Rv ferring to the embodiment illustrated, A is a bed or table ofanyusual or suitable type, upon which the stoneB is clamped by means ofclamps C.

D is a countersinkin tool, of carborundum, which is rotated ata igh rateof speed (two thousand to five thousand revolutions per minute) and isheld rigidly against lateral movement, while the bed A and the stone aremoved in any desired direction.

The cutting wheel or cylinder D is hollow at the center, as indicated inFig. 4, and is clamped on the lower end of a hollow shaft E,

carried in antifriction-bearings in a shaftv holder F, which isadjustable vertically 'in a rigid arm G. The shaft E is provided with ani ple H at its upper end for connection with a iiose and with a broadIpulley or drum J for driving it from a belt in any position of verticaladjustment. This arrangement obviates directly all gearing orcomplication in the driving of the cutting-tool'. tersinking, a veryminute adjustment is desirable, and thisis obtained by roviding a rack Lon the shaft-holder F, w 'ch rack is driven by a worm-wheel M, thelatter being fixed on the same shaft with another wormwheel N, driven bya worm O, which is rotated by a hand-wheel P at the side of the larm Gand-projecting forwardly suiciently to be within reach of the operatorat the front of the machine. lIn the machine shown the verticaladjustment of the tool is For counone-sixteenth of an inch for eachrevolution IOO slide R, so that when the latter is moved along itsguides S it carries with it the bed A and the mechanism for moving thebed A along its guides Q. lf both slides be operated at the same time,we obtain a movement of the bed 'and the stone which isa resultant ofthe two elementary movements and the direction of which depends upon thespeed of each of the two elementary movements.

The mechanism for moving the upper slide or bed Aconsists of a cylinderT, fixed upon the under side of the bled, and through which `two slides.

passes a piston-rodU, carrying at its central point a piston andhavingits ends supported against stirrups V, fastened upon the ends ofthe lower slide R. From lthe` opposite endsy rigid movement and lcan beperfectly controlled to produce a very accurate movement. The cylinder Xfor the lower slide R is also carried on the under side of the slide.The arm G is bifurcated at its base, and the piston-rodyY of the lowerslide is run back through the base portion of the arm, so as to` obtaina sufficiently extended movement of the cylinder without having toextend the piston-rod "Y beyond the front of the machine, where it wouldinterfere with the operator. The cylinder X is so arranged relatively tothe slide R that the cylinder is at the central point of the piston-rodwhen -the slide is arranged with its center immediately Lunder the tool.The base of the machine is substantially' T-shaped, with a rearwardextension Z for sup orting the tool-carrying arm G and with sidieextensions a afor supporting the guides S, upon which the lower slidetravels. 4nected by flexible pipes b b to the valve.

The controlling mechanism is mounted in a stand or casing c at the frontof the machine. Preferably a pair of controlling devices are used-onefor securing slow changes of direction and the other for securing uickchanges. The hand-Wheel d upon the sha t e operates a pinion f, whichthrough pinions g and h drives the pinion y' on the valve-stem at areduced s eed. The hand-wheel c on the outer ho ow shaft Z operatesthrough pinions m, n, and o to drive the pinion and the valvespindle pat a greater speed.

The valves for the two slides'are in construction onc double valve uponthe same spindle y) and within the same casing g. The

The lower cylinder X is con-y Water or other'suitable liquid enters at1' under pressure and is discharged at s. The upper part of the casingis provided with diametrically opposite ports t t', connected,respectively, to the flexible pipes W l/V of the upper slide. Thevalve-plug u is provided with ports on the same level as the ports t t',these being, respectively, a port e, connected with the upper end of thevalve-chamber by the triple passages 1, and therefore constitut- 'ing aninlet-port, and a diametrically .outlet-passage 2.. The ports of thevalveplug are arranged in line with the ports o e above. -The ports t t'w w in the casing should be throughout their length of sufficient sizein cross-section to permit a free flow ofl Water at the pressure used.The

orts and passages of the valve-plug should have a cross-section at leastequal to that of the casing-ports, so as to oppose no resistance to theflow when the valve is Wide open. The ports '11, fv, and in thevalve-body each have a Width of a quadrant of a circle, and thecasing-ports t, w, t', and w form, along their lines of contact with thevalvebody, successive quadrants. Thus as the forward edges of thevalve-ports o and e pass beyond the casing-ports t and t the forwardedges of the valve-ports and :t enter the area 0f the casing-ports w andw, respectively. So, also, as each valve-port passes entirely beyondonecasingort it begins to enter the casing-port imme iately opposite.

Sup ose one set of ports t t being connected to t e cylinder of a slidearranged to have an individual west-and-east motion in accordance as thepressure is supplied through the port t ort and the ports w w connectedto the cylinder of the other slide arranged to have an individualnorth-and-south movement as the power is supplied through the port w orw', respectively. With the valve 1n the position of Figs. 8 and 9 thetwo inletports v and :c will be equally open, so as to produce arectilinear movement, which is the resultant of an eastern and anorthern movement of equal velocity, this resultant being a movement ina northeast direction. Suppose the valve-stem to be moved now one-eighthof a revolution to theright. The port Q1 will be wide open andthev )ortclosed, and the Work will have a rectilinear movement in a straighteasterly direction. Another eighth IOS ISO

of a turn will leave the port'v half o enin the easterly direction andthe port :vha f open in the southerly direction, producing arectilinlength. This operation may be continued to describe either a comlete circle or an arc of an desired length. lf after describing a circuar arc of, say, a quadrants length', as is common at the corners ofcountersunk slabs,

it is desired to continue in a'rectilinear direction tangent to the arcdescribed, it is only necessary to hold the controlling meansstationary. l

Though I have described with great particularity of detail a certainembodiment of the invention, yet it is not to. be understood therefromthat the invention is limited to the specific embodiment disclosed.Various modifications thereof in detail and in the arrangement andcombination of the parts may be made by those skilled in the art withoutde arture from the invention.

hat I claim is- 1. A stone-working -machine including a' y tion. i

3. A stone-working machine including a' pairl of .separatefluid-pressure mechanisms or feeding the stone in twodirections at anangle with each other, and controlling means for regulatingsimultaneously the operation of said mechanisms to secure a resultantmovement in any desired direction.

4. A stone-Working machine including a lower -slide movable in onedirection, an 'upper slide carried thereb and movable in a direction atan angle wit the directionof the lower slide, rectilinearly-moving meansfor operating said slides simultaneously, and means for regulating therelative rates of feed. in said directions to. secure a resultantrectilinear movement of the upper slide in any desired direction.

5. A stone-working machine including a lower slide movable in onedirection, an upper slide carried thereb -and movable in a direction atan angle witiithe direction of the lower slide, and separaterectilinearly-moving fluidi-pressure mechanisms for operating saidslides, andmeans for regulating the relative rates of feed in saiddirections to secure a resultant rectilinear movement in any de- Sireddirection.

6'. A stone-working machine including in ends of said lower slide Rengaging t e ends of said piston-rod, a cylinder X carried by said lowerslide R, and a piston-rod Y Iextending through said cylinder X, and anarm Grl supporting the cutting-tool and open at its base, the rear endof said piston-rod Y being'extended back into the base portion of saidarm G whereby to secure an extended movement without projecting thepiston-rod Y beyond the front of the machine.

7. A stone-working machine including a air of rectilinearly-movingfeeding mechanisms for feeding the stone in two directions at an anglewith each other simultaneously, controlling means .for 4regulating therelative rates of feed in said directions to secure a resultantrectilinear movementin any desired direction, and a ra idly-rotatingcountersinking tool in a fixes on the face of said stone.

8. A countersinkingr'nachine including in combination acountersinking-tool D of carborundum, means for rotating the samerapidly about a vertical axis, a air of rectilinearl -moving mechanismsfdr feedin the wort thereto simultaneously in two 'rections at an anglewith each other, and controlling means for regulating the relativeposition for operating IOO rates of feed. in said directions so as tosecure a resultantrectilinear movement in any desired direction.

9. A stone-working machine including power-operated mechanisms forfeeding the stone in two directions at an angle with each othersimultaneously, and controlling. means therefor arranged to determine al resultant movement in any desired direction and to secure asubstantially circular feed as the controlling means is movedcontinuously in one direction.

10. A stone-working machine including power-operated feeding mechanism,land controlling means therefor arranged to secure a substantiallycircular feed as the controlling means is moved continuously in onedirection,`and to secure a tangentialfeed when the controllingmeans ishel stationary.

11. A stone-working machine including a air of separate fluid-pressuremechanisms or feeding the stone in.two directions at an angle with eachother, .and a double valve for regulating the operation of saidrespective IIO mechanisms, the parts of said valve pertaining to bothmechanisms being simultaneously operable.

1,2. A stone working machine including a pair of separate fluid-pressuremechanisms tor feeding the stone in two directions at an angle with eachother, and a double valve for regulating the operation of saidrespective mechanisms, the parts of said valve pertain.- ing to bothmechanisms being simultaneouslj)r operable, and arranged to secure asubstantially circular movement as they are moved continuously in onedirection.

13. A stone-Working machine including power-operated mechanisms forfeeding the stone in two directions at an angle with each l othersimultaneously, controlling means therefor arranged to determine aresultant movement in any desired direction and to secure asubstantially circular feed as the controlling means is movedcontinuously in,l one direction, and gearin foroperatingsaidfcontrolling means at a ast'er or slower rate at Will.

14. A stoneworking machine including av both mechanisms beingsimultaneouslyoperable, and gearingfor operating (said. valve at auicker or slower rate at will.

n witness whereof I have hereunto si ned my naine in the presence of twosubscri ing Witnesses.

JOHN ROYDEN PEIRCE. Witnesses:

EUGENE V. MYERS, FEED WHITE.

